how to perform sentiment analysis of twitter data using python and nltk ?

Can anyone please tell me how to perform sentiment analysis of twitter data using python and nltk ? 

2Comments
Pritam Prasun @pritam
2 May 2017 10:28 pm

"sentimental" is a python library which can be used for sentiment analysis. It helps you to find positive, negative and neutral sentiment.

Project Page: https://pypi.python.org/pypi/sentimental
Github:https://github.com/ErikGartner/sentimental 

Shreyans Dhankhar @shreyans
7 May 2017 02:55 am

you have to generate features from the tweets.

eg: some hashtag says #serious so you can use this type of info in performing your sentiment analysis.